git
diff --git a/Collapse file
‎hook.c‎
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+1Lines changed: 1 addition & 0 deletions b/Collapse file
‎hook.c‎
Copy file name to clipboardExpand all lines: hook.c
+1Lines changed: 1 addition & 0 deletions
diff --git a/Collapse file
‎t/t1800-hook.sh‎
Copy file name to clipboardExpand all lines: t/t1800-hook.sh
+31Lines changed: 31 additions & 0 deletions b/Collapse file
‎t/t1800-hook.sh‎
Copy file name to clipboardExpand all lines: t/t1800-hook.sh
+31Lines changed: 31 additions & 0 deletions
@@ -144,6 +144,7 @@ int run_hooks_opt(const char *hook_name, struct run_hooks_opt *options)
 		cb_data.hook_path = abs_path.buf;
 	}
 
+	run_processes_parallel_ungroup = 1;
 	run_processes_parallel_tr2(jobs,
 				   pick_next_hook,
 				   notify_start_failure,
 
@@ -4,6 +4,7 @@ test_description='git-hook command'
 
 TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-terminal.sh
 
 test_expect_success 'git hook usage' '
 	test_expect_code 129 git hook &&
@@ -120,4 +121,34 @@ test_expect_success 'git -c core.hooksPath=<PATH> hook run' '
 	test_cmp expect actual
 '
 
+test_hook_tty () {
+	cat >expect <<-\EOF
+	STDOUT TTY
+	STDERR TTY
+	EOF
+
+	test_when_finished "rm -rf repo" &&
+	git init repo &&
+
+	test_commit -C repo A &&
+	test_commit -C repo B &&
+	git -C repo reset --soft HEAD^ &&
+
+	test_hook -C repo pre-commit <<-EOF &&
+	test -t 1 && echo STDOUT TTY >>actual || echo STDOUT NO TTY >>actual &&
+	test -t 2 && echo STDERR TTY >>actual || echo STDERR NO TTY >>actual
+	EOF
+
+	test_terminal git -C repo "$@" &&
+	test_cmp expect repo/actual
+}
+
+test_expect_success TTY 'git hook run: stdout and stderr are connected to a TTY' '
+	test_hook_tty hook run pre-commit
+'
+
+test_expect_success TTY 'git commit: stdout and stderr are connected to a TTY' '
+	test_hook_tty commit -m"B.new"
+'
+
 test_done
Original file line number	Diff line number	Diff line change
`@@ -144,6 +144,7 @@ int run_hooks_opt(const char hook_name, struct run_hooks_opt options)`
`144`	`144`	`cb_data.hook_path = abs_path.buf;`
`145`	`145`	`}`
`146`	`146`
	`147`	`+ run_processes_parallel_ungroup = 1;`
`147`	`148`	`run_processes_parallel_tr2(jobs,`
`148`	`149`	`pick_next_hook,`
`149`	`150`	`notify_start_failure,`